* Fix NPE when operating on a selection containing a linked resource pointing to a file or directory outside of a workspace project git repository ([https://bugs.eclipse.org/bugs/show_bug.cgi?id=406922 bug 406922]).

* Fix NPE when operating on a selection containing a linked resource pointing to a file or directory outside of a workspace project git repository ([https://bugs.eclipse.org/bugs/show_bug.cgi?id=406922 bug 406922]).

Commit dialog: the file section can now be resized by hovering the mouse just above the file section title and dragging the sash up or down, making the message section increase/decrease accordingly (bug 343712).